Thickness Of Flat Roof Insulation

There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings.

Thickness of flat roof insulation.

Foamular xps roof insulation for commercial buildings page 5 foamular xps roof insulation for commercial buildings foamular xps insulation is a rigid foam insulation which meets the needs of today s design professionals for a truly sustainable insulation product. A cold roof has the insulation placed below the structural deck which thus remains cold. A warm roof has the insulation above the structural deck which is thus kept warm. Here we share the most common mistakes people make when installing flat roofing insulation.

There are two basic categories of roof design. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. The chosen insulation laid on top of this should be able to take the weight of anything put above it on the roof without compression or protected from compression by further sheeting. Flat roof insulation thickness.

See the department of energy s doe ranges for recommended levels of insulation below. The typical u value of an existing uninsulated flat roof is 1 5w m2k. It should be of the maximum available thickness. Roofing insulation is one of the most important and misunderstood building components.

Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation. Rockwool stone wool roof insulation combines the thermal performance dimensional stability impact resistance and acoustic control required to increase the performance of many flat roof assemblies. Saint gobain insulation uk manufacture and supply glass mineral wool slabs and rolls along with rigid polyisocyanurate pir boards that can be considered suitable for a wide range of applications across flat roofs whether you re looking to insulate at joist level or above the roof deck in your flat roof construction. When installing a flat roof it is important to ensure you have suitable flat roof insulation to minimise any heat loss and improve noise insulation and is an essential part of the roof structure without appropriate flat roof insulation the extension or building will not pass building regulations.

With solutions ranging from our optim r vacuum insulation panels to our therma range of pir insulation we can provide the best solution for flat roof insulation for roofs with mechanically fixed bonded or torch applied waterproofing systems. Rockwool products are available with a bitumen or mineral coated fiberglass face to be used in a number of roofing solutions. The waterproof layer is above the insulation and a vapour control layer is placed below the insulation.